Scraper.



J. W. CHAMPION.

SGBAPEB.

urmonron FILED SEPT. 13, 1911.

Patented May 28, 1912.

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UNITED QFFICE" JOHN w. CHAMPION, or runnno cotonnno.

, SGRAPER.

Application filed September 13, 1911. Serial No. aaosa.

To all whom it may concern Be it known that I,J0HN W. CHAMPION,

a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of 5 Colorado, have invented certain new and useful Improvements in Scrapers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to scrapers, the same being particularly .adaptedfor use in removing dross from the wells of linotype or other slug casting machines.

The invention has forits object tojproduce a device of this character which may be easily and quickly inserted in a well and when rotated will removethe dross which has accumulated upon the inner surface thereof.

Other objects of this invention will become apparent as it is more fully set forth.

In the accompanying drawings; Figure 1 is a side elevation of the device; Fig. 2 is a vertical sectional view of the device the same being in its operative position within a well; Fig. 3 is a transverse sectional view on theline 3-3 of Fig. 2;Fig. t is a perspective view of one of the'plates.

Referring to the drawings the numeral 1 designates a shaft, the upper end of which is provided with a yoke 2 and in which the lower end of a handle 3 is pivotally connected.

Mounted upon the shaft 1 are u per and lower blocks 1 and 5, respectively, t e upper block being provided with a central opening 6 through which the shaft 1 is passed. A set screw 7 is passed transversely through" one side of the block, the inner end of which contacts with the shaft to secure'the block provided upon its upper face witha pair of studs 8, the studs being secured to diag onally opposite corners of said block, each of the studs is rovided near its upper end with a perforation 9, the purposeof which will be hereinafter described. The block 4: is further provided near its outer ends with Specification of Letters Patent.

4: in a rigid position. The block 4 is'furtheri Patented May 28,1912.

which are provided with perforations '16,

the purpose of which will be hereinafter described.

When the upper and-lower trunnions 11 and 13 are in their respective openings formed in the upper and lower blocks the lower plates 12 are permitted to rock in one direction, the return direction of the same being limited by the stops 17, said stops be:

ing adjustably mounted 1 upon the opposite sides of the upper block 4:. The plates 12 are each provided withscraping edges 18, said plates may be serrated if desired.

A pair of coil springs 18 are provided and have their opposite terminals secured in the perforations'9 of the studs 8 and in the perforations 16 of the extensions 15, respectively, whereby the plates 12 are normally held in contact with the stops 17. i

The plates 12 are formed with beveled surfaces 19, said surfaces being formed upon the cutting edge of said plates and are adapted to guide the device into the well to be operated. In operating the device the bevel surface 19 will engage the upper. edge into yielding engagement with the interior wall of the well, saidcutting edges, when the 7 device is rotated, removing all the dross therefrom.

It is often necessary to sharpen the cutting edges 18, which naturally causes the same to wear and to take up for this wear as well as that caused by the use of said plate the stops 17 may be adjusted to compensate for this wear,,said stops when adjusted for this purpose permitting-the cutting edges to yieldingly contact with the inner surface of the well.

, It is obvious that the device may be used with success'for cleaning boiler fiues.

An auxiliary handle 19 or holding device may be employed, the same having its inner end provided with an eye 20, through which the handle 3 is passed.

When the device is used for cleaning the wells used in connection with the linotype machines the handle 3 maybe supported at its upper end by a lever 21, a portion of which is shown. The auxiliary handle 19 may then be operated to rotate the handle 3 to impart corresponding movement to the device.

The lever 21 referred to is the pot pump lever employed in connection with the usual linotype machine.

Having thus described the invention, I claim 1. A scraper of the class described, comprising a shaft, upper and lower blocks secured to said shaft and arranged in spaced relation, plates having cutting edges, said plates being pivotally connected to said blocks, lugs secured to diagonally opposite corners of the upper block, said plates having vertical extensions on the upper edges, coil springs having their opposite terminals secured to the lugs and extensions respectively, whereby the cutting edges of the plates are held in yielding contact with the interior surface of a Vessel or the like, and

means for limiting the pivotal movement of the plates in one direction.

2. In a scraper of the class described, the combination of a shaft, a pair of blocks secured thereon and arranged in spaced relation, a pair of oppositely disposed plates .pivotally connected between said blocks,

having cutting edges formed thereon, stops adjustably secured to said blocks and engaging said plates, whereby said plates may be adjusted to permit the cutting edges to yieldingly contact with the inner wall of a Vessel, and a handle pivotally connected to the upper end of said shaft, which when operated rotates said scraper.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOHN W. CHAMPION.

Witnesses:

J NO. H. MITCHELL, EDW. F. RIZER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. l 

